The hydraulic connections must be complete by installing:
•
air breather valves in the highest points of the pipes;
• flexible elastic couplings.
•
stop valves.
• sieve water filter with 0.4 mm meshes.
•
thermally insulate all the components and the hydraulic pipes.
The minimum nominal diameter of the hydraulic connection pipes must be
1".
To allow for maintenance or repair operations, it is essential that each hy-
draulic connection is equipped with the corresponding manual shut-off
valves.
• Table 1
Necessary characteristics of the hydraulic system.
Water minimum flow rate
Nominal water
flow rate*
System water
content
Max**
Operating
pressure
System
difference in level
* for floor systems
** with maximum temperature of system water of 35°C
The charts in fig.18-18a-18b show the prevalence of the circulator for each speed of the hydraulic circulator
and the load losses inside the machine from which the residual prevalence at the connections of the machine
must be obtained, expendable on the system.
The circulation of the minimum content of the conditioning system be ensured even if the valves
in the system are closed.
3.2.1 - Circulation pumps
Sherpa Aquadue is equipped with one high-efficiency circulation pump.
The pumps with permanent magnet wet rotor have an electronic adjustment module with integrated fre-
quency converter.
On the adjustment module is present a control knob.
EN - 14
External
SHERPA
unit
S2 12
Internal
unit
l/s
0,14
l/s
0,57
Min
l
45
l
400
Max
kPa
300
Max
m
20
(fig.18-18a-18b)
SHERPA
SHERPA
SHERPA
S2 14
S2 16
S2 12T
SHERPA AQUADUE S2 BIG
0,14
0,14
0,67
0,77
51
58
400
400
300
300
20
20
SHERPA
SHERPA
S2 14T
S2 16T
0,14
0,14
0,14
0,57
0,67
0,77
45
51
58
400
400
400
300
300
300
20
20
20